/*
 * Copyright (C) Contributors to the Suwayomi project
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

import assert from 'node:assert/strict';
import { describe, it } from 'node:test';
import { createMaterialYouScheme, MATERIAL_YOU_STABLE_SEED } from './MaterialYouPalette.ts';

describe('createMaterialYouScheme', () => {
    it('creates a deterministic stable blue light scheme', () => {
        const first = createMaterialYouScheme(MATERIAL_YOU_STABLE_SEED, 'light');
        const second = createMaterialYouScheme(MATERIAL_YOU_STABLE_SEED, 'light');

        assert.deepEqual(first, second);
        assert.equal(first.seed, '#5B74EF');
        assert.equal(first.onSurface, '#171B2C');
        assert.notEqual(first.surface, first.surfaceContainer);
    });

    it('orders dark tonal surfaces from darkest to lightest', () => {
        const scheme = createMaterialYouScheme('#8F7CF7', 'dark');

        assert.deepEqual(
            [scheme.surface, scheme.surfaceContainer, scheme.surfaceContainerHigh],
            ['#11131A', '#191B23', '#24262F'],
        );
        assert.equal(scheme.onSurface, '#E4E6F0');
    });

    it('uses true black only for the base pure-black surface', () => {
        const scheme = createMaterialYouScheme('#5B74EF', 'dark', true);

        assert.equal(scheme.surface, '#000000');
        assert.notEqual(scheme.surfaceContainer, '#000000');
        assert.notEqual(scheme.primary, scheme.onPrimary);
    });

    it('normalizes invalid seeds to the stable seed', () => {
        assert.deepEqual(createMaterialYouScheme('not-a-color', 'dark'), createMaterialYouScheme('#5B74EF', 'dark'));
    });
});